What is CVE-2026-28560?

CVE-2026-28560 is a medium-severity vulnerability in Gvectors Wpforo_forum, classified under Cross-site Scripting. CVSS score: 5.5/10. Published 2026-02-28.

How severe is CVE-2026-28560?

Medium severity. CVSS v3 base score is 5.5 out of 10.

XSS in Gvectors Wpforo_forum

CVE-2026-28560

wpForo Forum 2.4.14 contains a stored cross-site scripting vulnerability that allows script injection via forum URL data output into an inline script block using json_encode without the JSON_HEX_TAG flag. Attackers set a forum slug contain…

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.002 (13.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N.

Affected products

Gvectors Wpforo_forum
Gvectors Team Wpforo Forum — versions 2.4, 2.4.16

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

disclosure@vulncheck.com (Product, product)
disclosure@vulncheck.com (Release Notes, patch)
disclosure@vulncheck.com (Third Party Advisory, third-party-advisory)

Frequently asked questions

What is CVE-2026-28560?: CVE-2026-28560 is a medium-severity vulnerability in Gvectors Wpforo_forum, classified under Cross-site Scripting. CVSS score: 5.5/10. Published 2026-02-28.
How severe is CVE-2026-28560?: Medium severity. CVSS v3 base score is 5.5 out of 10.